package com.atguigu.eduservice.controller;


import com.atguigu.commonutils.R;
import com.atguigu.eduservice.entity.EduTeacher;
import com.atguigu.eduservice.entity.vo.TeacherQuery;
import com.atguigu.eduservice.service.EduTeacherService;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.bouncycastle.LICENSE;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author testjava
 * @since 2020-02-24
 */
@CrossOrigin  //解决跨域
@Api(description = "讲师管理")
@RestController
@RequestMapping("/eduservice/teacher")
public class EduTeacherController {

    //访问地址： http://localhost:8001/eduservice/teacher/findAll
    //把service注入
    @Autowired
    private EduTeacherService teacherService;

    //1 查询讲师表所有数据
    //rest风格
    @ApiOperation(value = "所有讲师列表")
    @GetMapping("findAll")
    public R findAllTeacher() {
        //调用service的方法实现查询所有的操作
        List<EduTeacher> list = teacherService.list(null);
        return R.ok().data("items", list);
    }

    //2.逻辑删除讲师的方法
    @ApiOperation(value = "根据id删除讲师")
    @DeleteMapping("{id}")
    public R removeById(@ApiParam(name = "id", value = "讲师id", readOnly = true) @PathVariable String id) {//@PathVariable这个注解是得到路径中的id值
        boolean flag = teacherService.removeById(id);
        if (flag) {
            return R.ok();
        } else {
            R.error();
        }
        return null;
    }

    //3.分页查询的方法
    @ApiOperation(value = "分页讲师列表")
    @GetMapping("{page}/{limit}")
    public R pageList(
            @ApiParam(name = "page", value = "当前页码", required = true)
            @PathVariable Long page,
            @ApiParam(name = "limit", value = "每页记录数", required = true)
            @PathVariable Long limit) {
        //创建方法
        Page<EduTeacher> pageParam = new Page<>(page, limit);
        //调用方法实现分页，service中扫描下，分页的功能就是用page来进行实现的
        //调用方法的时候，底层封装，把分页所有的数据封装到pageParam对象里面
        teacherService.page(pageParam, null);

        List<EduTeacher> records = pageParam.getRecords();//数据list集合
        long total = pageParam.getTotal();//总记录数
        return R.ok().data("total", total).data("rows", records);
    }

    //4 条件查询带分页的方法
    @PostMapping("/{page}/{limit}")
    @ApiOperation(value = "按条件查询")
    public R pageTeacherCondition(
            @ApiParam(name = "page", value = "当前页码", required = true)
            @PathVariable long page,
            @ApiParam(name = "limit", value = "每页记录数", required = true)
            @PathVariable long limit,
            //加入@RequestBody，传输json数据，用@PostMapping运输更好，同时这个值可以没有
            @RequestBody(required = false) TeacherQuery teacherQuery) {
        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(page, limit);

        //构建条件，Wrapper 的作用就是用于定义各种各样的条件（where）。所以不管是查询、更新、删除都会用到Wrapper。
        QueryWrapper<EduTeacher> wrapper = new QueryWrapper<>();
        // 多条件组合查询
        // mybatis学过 动态sql
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        //判断条件值是否为空，如果不为空拼接条件
        if (!StringUtils.isEmpty(name)) {
            //构建条件
            wrapper.like("name", name);
        }
        if (!StringUtils.isEmpty(level)) {
            wrapper.eq("level", level);
        }
        if (!StringUtils.isEmpty(begin)) {
            wrapper.ge("gmt_create", begin);
        }
        if (!StringUtils.isEmpty(end)) {
            wrapper.le("gmt_create", end);
        }

          //排序
        wrapper.orderByDesc("gmt_create");

        //调用方法实现条件查询分页
        teacherService.page(pageTeacher, wrapper);

        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords(); //数据list集合
        return R.ok().data("total", total).data("rows", records);
    }


    //5 添加讲师
    @ApiOperation(value = "新增讲师")
    @PostMapping("addteacher")
    public R save(
            @ApiParam(name = "teacher", value = "讲师对象", required = true)
            @RequestBody EduTeacher eduTeacher) {
        boolean save = teacherService.save(eduTeacher);
        if (save) {
            return R.ok();
        } else {
            return R.error();
        }
    }

    //6 先查询id
    @ApiOperation(value = "根据id进行查询")
    @GetMapping("getid/{id}")
    public R getid(
            @ApiParam(name = "id", value = "讲师id", required = true)
            @PathVariable String id) {
        EduTeacher eduTeacher = teacherService.getById(id);
        return R.ok().data("teacher", eduTeacher);
    }

    //6 查询完成以后再进行修改,因为根据id修改，所以修改的时候必须把id也传进去id
    @ApiOperation(value = "根据ID修改讲师")
    @PostMapping("update")
    public R updateById(
            @ApiParam(name = "teacher", value = "讲师对象", required = true)
            @RequestBody EduTeacher eduteacher) {
        boolean save = teacherService.updateById(eduteacher);
        if (save) {
            return R.ok();
        } else {
            return R.error();
        }
    }
}

